Home / 1,927.40-2,660.10-1,677.80

Finding the Fourth Proportional to 1,927.40, 2,660.10 and 1,677.80

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Solution

The fourth proportional to 1,927.40, 2,660.10 and 1,677.80 is: 2,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.40 : 2,660.10 = 1,677.80 : x
  2. Step 2: Convert to fraction form
    1,927.40/2,660.10 = 1,677.80/x
  3. Step 3: Cross multiply
    1,927.40x = 2,660.10 × 1,677.80
  4. Step 4: Simplify right side
    1,927.40x = 4,463,115.78
  5. Step 5: Solve for x
    x = 4,463,115.78/1,927.40
  6. Step 6: Final answer
    x = 2,315.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.